Green­ing an In­dus­trial Town

Beijing (English) - - CONTENTS -

Ying­hai Township con­tin­ues to be an in­no­va­tor in “turn­ing waste into trea­sure.” The ex­pand­ing green space within Ying­hai Township has not only im­proved the en­vi­ron­ment but also won the sup­port and ap­pre­ci­a­tion from the res­i­dents.

Past Bei­jing's south­ern Fifth Ring Road, south along the Bei­jingTaipei High­way, is a large area of newly-built hous­ing called Ying­hai Ji­ayuan, con­structed on re­claimed in­dus­trial land. From the bal­conies of these apart­ments, a large green area can be seen. The apart­ments and lush park are the fruit of the South-cen­tral eco­log­i­cal cul­ture de­vel­op­ment axis project.

“This is our Ying­hai Leisure Park,” says a staff mem­ber of the Dax­ing Ying­hai township gov­ern­ment, point­ing to­ward an area of pine trees and other green­ery.

The beau­ti­ful scenery of the park at­tracts vis­i­tors and lo­cal peo­ple alike. The flow­ers at­tract many passers-by who stop and take pho­tographs. On the trails, peo­ple take leisurely strolls. At the en­trance of the park is a sign read­ing: “Keep off the grass, area seeded.”

How­ever, only a few years ago, what is now a lush, 10-hectare (ha)ur­ban park was in poor con­di­tion. Its com­plete facelift and trans­for­ma­tion is a re­sult of turn­ing con­struc­tion de­bris into use­ful ma­te­ri­als.

The Lit­tle Known Past

“They've done some­thing re­ally good here. They've done a re­ally nice job.” Sixth-three-year- old Grandpa Fu lives in the Ying­hai res­i­den­tial area across from the park. “Now that the road is com­pleted, I'm here to take a look,” Fu said. He rides a bi­cy­cle in the park and has long been a fre­quent vis­i­tor. “I used to come here a lot, and have seen the place changed for the bet­ter,” he said.

Be­fore the project, the area was com­pletely dif­fer­ent. A few years ago,

Trans­lated By Re­becca Lou Edited by Mary Frances Cap­piello Pho­tos by Qu Bowei

there were sev­eral scat­tered in­dus­trial build­ings in the area. The en­vi­ron­ment was dirty, dis­or­derly and the traf­fic was bad. How­ever, in Oc­to­ber 2016, Ying­hai Township was se­lected to be the site of one of the na­tional re­form pi­lot projects in the use of col­lec­tive land. A se­ries of de­mo­li­tions and re­lo­ca­tions was ini­ti­ated and the area un­der­went ma­jor facelifts. Ac­cord­ing to Zhang Wei, gen­eral man­ager of Bei­jing Huiy­ing Hengye Co. Ltd., the project “in­volved the de­mo­li­tion of the re­main­ing seven in­dus­trial parks with more than 480 non-res­i­den­tial houses. A to­tal of 300 ha of land was re­claimed and over 3.28 mil­lion cu­bic me­tres (cu.m) of con­struc­tion space was dis­man­tled. About 3.85 mil­lion cu.m of con­struc­tion waste was left over from the project.”

In Feb­ru­ary 2015, Dax­ing Dis­trict was in­cluded in the pi­lot project of na­tional land re­form. In ac­cor­dance with the prin­ci­ple of “de­mo­li­tion pre­cedes con­struc­tion,” the township- owned Bei­jing Huiy­ing Hengye Co. Ltd. started re­lo­ca­tion and de­mo­li­tion of seven vil­lage-level in­dus­trial com­plexes. “Con­struc­tion waste once piled up like a moun­tain, but if the waste is trucked out­side,” Zhao ex­plained, “It will cre­ate sec­ondary pol­lu­tion prob­lems.”

Grandpa Fu ap­pre­ci­ates the new en­vi­ron­ment cre­ated by the project. He stated: “In the past, it was re­ally messy around here. There were small work­shops in the court­yard, waste col­lec­tors, and there were many safety haz­ards. Af­ter the re­lo­ca­tion, this place is com­pletely changed. There are now places for peo­ple to spend leisure time. There are green trees and flow­ers, and the park is much bet­ter.”

Res­i­dents like Fu en­joy their new sur­round­ings and the Ying­hai leisure park is their favourite place to spend time. How­ever, most res­i­dents do not know that the park was cre­ated from the huge amount of con­struc­tion waste left over from de­mo­li­tion.

“A great deal of il­le­gal con­struc­tion was taken down and the large amount of con­struc­tion waste such as bricks, con­crete, muck and me­tal pipes started to ac­cu­mu­late, which de­layed the work of park con­struc­tion teams.” Ac­cord­ing to a guide­line is­sued in Au­gust this year by the Bei­jing Gar­den­ing and Green­ing Bureau, con­struc­tion waste will be sorted and re­cy­cled lo­cally. Ying­hai Township is ap­par­ently al­ready tak­ing ac­tion.

Wit­ness­ing a Mir­a­cle

“Clear wa­ters and lush moun­tains are in­valu­able as­sets.” Ying­hai Township is ded­i­cated to cre­at­ing a green eco­log­i­cal en­vi­ron­ment for the peo­ple, hence their de­ci­sion to build a park from con­struc­tion waste.

What kind of park should be built? This needed to be con­sid­ered im­me­di­ately, and the job fell to the de­sign com­pany.

“In pre­lim­i­nary re­search and in­ves­ti­ga­tion of the project, we fo­cused on the ba­sic sit­u­a­tion of the plot it­self, the sur­round­ing area, the over­all fu­ture de­vel­op­ment of the town, and the po­ten­tial needs of the lo­cal res­i­dents,” said Li Xue­jiao, land­scape ar­chi­tect and co­or­di­na­tor of the green­ing project. Key fac­tors to be con­sid­ered in the ini­tial de­sign of the project in­cluded the treat­ment of con­struc­tion waste gen­er­ated in the ur­ban­i­sa­tion of the town, im­prove­ment of the ex­ist­ing and fu­ture green open space net­work, con­struc­tion of res­i­den­tial space and trails, tap­ping the unique cul­tural el­e­ments of the area, and im­prov­ing the qual­ity of life for the peo­ple. "The con­cep­tu­al­i­sa­tion and fi­nal­i­sa­tion of our de­sign plan was mainly based on these is­sues,” said Li.

Turn­ing Waste into Trea­sure

“Waste” is some­thing con­sid­ered to have no value—un­til its use­ful­ness is recog­nised. “Turn­ing waste into trea­sure” is a process of dis­cov­er­ing its value and mak­ing ra­tio­nal use of it. Li has her own strat­egy for this. “In the con­struc­tion process, the waste we have to deal with is con­struc­tion waste gen­er­ated in the rapid con­struc­tion of the town. Poor han­dling of the con­struc­tion waste will only add to the bur­den of ur­ban city builders. We de­signed a process in which waste can be re­duced, re­cy­cled and made harm­less. This process is how we can turn waste into trea­sure.”

In April 2017, Ying­hai Township launched a pub­lic bid and hired a com­pany to process the con­struc­tion waste. The recla­ma­tion process had be­gun.

“Through the sep­a­ra­tion of con­struc­tion waste, we were able to re­cy­cle lo­cally.” Con­struc­tion waste was sep­a­rated into var­i­ous cat­e­gories such as bricks, blocks, con­crete, wood, me­tal, glass and plas­tics. This sorted waste can then be re­cy­cled in land­scap­ing projects. For ex­am­ple, whole bricks or con­crete blocks can be used for pave­ments, car parks, or in leisure plazas. Bro­ken bricks and smaller con­crete blocks can be used in gar­dens. Wood and plas­tic ma­te­ri­als can be used for wood planks and gar­den dec­o­ra­tion. Me­tal, glass and plas­tics can be re­cy­cled.

The Ying­hai Park used this kind of con­struc­tion waste. “Crush­ers were used to screen and sort the waste,” ex­plained Tan Xiaowei, the per­son in charge of the con­struc­tion crush­ing unit. “First, we sep­a­rated iron, do­mes­tic garbage and cloth strips from the con­struc­tion waste. The iron was re­cy­cled through smelters. The do­mes­tic garbage and cloth were trans­ported to Nan­gong Garbage In­cin­er­a­tion Plant.” Though con­struc­tion waste con­tains many types of ma­te­ri­als, the elab­o­rate sort­ing process sep­a­rates the re­cy­clable from the non-re­cy­clable. The re­cy­clable can then be used to make many types of new ma­te­ri­als. “Re­main­ing con­crete and brick tiles were pul­verised to make ma­te­ri­als for road paving foun­da­tions, fill­ing up the in­side of bricks, mak­ing por­ous bricks and land­scap­ing,” said Tan.

“Now the con­struc­tion waste crush­ing project is ap­proach­ing the end,” con­tin­ued Tan. “Only two of the six cen­tralised crush­ing sta­tions re­main. At the peak, there were six crush­ing sta­tions with a to­tal of 10 pro­cess­ing ma­chines that had an an­nual dis­posal ca­pac­ity of 7.9 mil­lion tonnes. The pro­cessed par­ti­cles are no big­ger than three cen­time­tres in di­am­e­ter.” The estab­lish­ment of the cen­tralised crush­ing sta­tions was based on the prin­ci­ple of prox­im­ity and ful­fill­ing needs. “These re­cy­cled ma­te­ri­als and harm­less par­ti­cles are re-used in the vicin­ity in green­ing con­struc­tion projects. Such a process will re­duce un­nec­es­sary in­vest­ment and pol­lu­tion caused by re­peated trans­porta­tion of the ma­te­ri­als.” As the Bei­jing Gar­den­ing and Green­ing Bureau high­lighted in their guide­lines, “spe­cial crush­ers or mo­bile crush­ing sta­tions for con­struc­tion waste can be used when nec­es­sary. The bulk con­crete and waste bricks and other ma­te­ri­als shall be bro­ken down to a smaller size." In the crush­ing sta­tion of Ying­hai, the de­tri­tus will be moulded into de­sired shapes and ma­te­ri­als with the aid of com­put­ers. These ma­te­ri­als will then be loaded onto trucks for use in the park.

Af­ter clas­si­fi­ca­tion and treat­ment, about 800,000 cu.m of the orig­i­nal con­struc­tion waste was made into ag­gre­gate and per­me­able bricks, which were used in the park. Con­struc­tion waste was made use­ful again to en­hance the liv­ing con­di­tions and eco­log­i­cal en­vi­ron­ment.

“The vol­ume of re­cy­cled ag­gre­gate de­ter­mines the de­sign,” land­scape ar­chi­tect Li Xueyu ex­plained. “The ag­gre­gated ma­te­ri­als re­cy­cled from the con­struc­tion waste are used for land­scap­ing. The re­claimed per­me­able bricks are used to pave trails. The re­cy­cled gravel is used to lay the roadbed.” Nat­u­rally, if there is more ag­gre­gate, the hills will be higher. In or­der to make the green plants grow bet­ter, it is nec­es­sary to cover the ag­gre­gated ma­te­ri­als with two me­ters (m) of new soil. Tech­ni­cal de­tails sim­i­lar to this are also in line with gov­ern­ment guide­lines, which for­bid the use of con­tam­i­nated and haz­ardous con­struc­tion waste, and pro­hibit the mix­ing of crushed waste with soil for plants. Di­rectly plant­ing in re­cy­cled con­struc­tion waste is also for­bid­den. Ac­cord­ing to reg­u­la­tions, the soil on top of re­cy­cled waste shall be no less than 1 m deep, while in ar­eas where large trees are grown, the soil cov­er­ing shall be no less than 2 m.

In the cen­tral area of Ying­hai Park, there is an eye- catch­ing paved trail with gray bricks. Three mid­dle-aged peo­ple are strolling along it. “We come here every day and re­ally en­joy tak­ing a walk around,” they say. Young cou­ples also like to take their chil­dren there. Some lo­cals go there to walk dogs. It is easy to tell from peo­ple's smiles that they en­joy the park and the trail.

How­ever, the unas­sum­ing grey bricks they walk on have hid­den mys­ter­ies. Upon close in­spec­tion, pores are vis­i­ble on the sides, and there are colours of dim red and cyan around the por­ous struc­tures. The colours come from brick tiles re­cy­cled from con­struc­tion waste. Ying­hai

Park's paths are made from re­cy­cled per­me­able bricks.

Green and Live­able

To avoid pos­si­ble sec­ondary pol­lu­tion, spe­cial treat­ments are used be­fore and while the con­struc­tion waste is crushed. Ying­hai Township gov­ern­ment and the re­lated or­gan­i­sa­tions and com­pa­nies used sev­eral dif­fer­ent mea­sures to over­come dif­fi­cul­ties and re­duce pol­lu­tion.

“One ap­proach is that we strength­ened the on-site su­per­vi­sion of the waste crush­ing,” said Zhang Wei, gen­eral man­ager of Bei­jing Huiy­ing Hengye Co., Ltd. “Within the scope of the de­mo­li­tion and re­lo­ca­tion, all the ex­posed ground sur­faces were covered with straw mats; dump trucks were re­stricted to work­ing in the evening to prevent noise and traf­fic con­ges­tion; sprin­klers, equip­ment spray­ing and man­ual wa­ter­ing were adopted for dust re­duc­tion and dust proof­ing. Ad­di­tion­ally, rou­tine daily in­spec­tions were done by des­ig­nated per­son­nel to en­sure all the work was car­ried out per reg­u­la­tions. If any prob­lem was found, rec­ti­fi­ca­tion would fol­low and be tracked.” To treat the re­main­ing un­crushed con­struc­tion waste, Ying­hai Township gov­ern­ment launched a new bid in Au­gust 2018, which was won by Bei­jing Ying­hai En­gi­neer­ing Ser­vice Cen­tre.

In ad­di­tion, the Ying­hai Township Gov­ern­ment strictly mon­i­tored the key pol­lu­tants as they wor­ried the con­struc­tion waste land­fill might neg­a­tively af­fect the soil. To eval­u­ate whether us­ing crushed con­struc­tion waste for green­ing and land­fill would pol­lute the soil and ground­wa­ter, they hired a com­pany spe­cial­is­ing in en­vi­ron­ment test­ing and took sam­ples from a tri­an­gle of land at Xiyi vil­lage, Ying­hai Township, not far from Ying­hai Leisure Park.

The re­cy­cled ma­te­ri­als have been have been in­te­grated into the park's most at­trac­tive fea­tures. On San­tai Road, in front of the township gov­ern­ment build­ing, look­ing south, there is a large, 2.5 kilo­me­tre long un­du­lat­ing green space, with wind­ing trails and sev­eral white deer sculp­tures on it. Point­ing to the trails, Tan Xiaowei the crush­ing con­trac­tor said, “Coarse ag­gre­gate was gen­er­ally used in the mi­cro-land­scape of the park. Re­cy­cled per­me­able bricks made of fine ag­gre­gate were used for paving the trails, in­clud­ing these be­side San­tai Road. Sand and gravel ag­gre­gate was gen­er­ally used to lay the roadbed.” Use of con­struc­tion waste to build green spa­ces, such as parks, has suc­cess­fully re­duced the cost by 30 per­cent to 40 per­cent. “In the near fu­ture, there will be toi­lets here mainly made from re­cy­cled prod­ucts,” Tan added.

The ex­pand­ing green space

within Ying­hai Township has not only im­proved the en­vi­ron­ment, but also won the sup­port and ap­pre­ci­a­tion from the res­i­dents. As Zhang Wei said, “At present, peo­ple are en­joy­ing richer ma­te­ri­als. In the mean­time, their need for bet­ter cul­tural and leisure life is be­com­ing stronger.” Such green leisure parks are wel­come by the res­i­dents. They make Ying­hai Township green all year round and res­i­dents can ap­pre­ci­ate flow­ers for three sea­sons a year.

A Model of Waste Re­cy­cling

Ac­cord­ing to a guide­line is­sued in Au­gust this year by the Bei­jing Gar­den­ing and Green­ing Bureau, each dis­trict shall ap­pro­pri­ately use con­struc­tion waste in green­ing projects and build in­ten­sive gar­dens and parks. Ying­hai Township of Dax­ing Dis­trict is a good pi­o­neer and model.

In the fu­ture, it is ex­pected to be­come a com­mon prac­tice to re­cy­cle con­struc­tion waste from de­mol­ish­ing il­le­gal build­ings and use it in build­ing ur­ban parks and green spa­ces to fully utilise ma­te­ri­als.

Statis­tics show that there are about 40 mil­lion tonnes of newly added con­struc­tion waste each year in Bei­jing and that these ma­te­ri­als are in fact mis­placed re­sources. For Bei­jing, a long- es­tab­lished me­trop­o­lis with lim­ited space and re­sources, green and in­ten­sive de­vel­op­ment is ad­vo­cated. This re­quires con­certed ef­fort to im­prove qual­ity and de­crease quan­tity. Mak­ing con­struc­tion waste into use­ful re­sources is a shift in life­style and con­cept. This kind of green and in­ten­sive de­vel­op­ment is ex­actly in the vane of this green city.

In re­cent years, Ying­hai Township's plan has been to co­or­di­nate the re­cy­cling of con­struc­tion waste, eco­log­i­cal pro­tec­tion and lo­cal de­vel­op­ment. Pro­fes­sional green­ing de­sign­ers have been hired to carry out uni­fied plan­ning and de­sign, and green land­scape belts have been built along main roads and rivers. The green­ing projects of Ying­hai Township cur­rently ex­tend along the Bei­jing-taipei ex­press­way, with the ex­its of Xingyi Road and Huangyi Road ex­its as nodes. Along Huangyi Road, green­ing was en­hanced around Ying­hai Ji­ayuan com­mu­nity as well as its en­trances and ex­its. On the north and south sides of San­tai Road, green land­scape av­enues and a sports plaza were built for res­i­dents to keep fit and en­rich their cul­tural life. Pub­lic wel­fare ceme­ter­ies have also been con­structed in the area us­ing con­struc­tion waste. There are some projects cur­rently un­der

plan­ning, such as us­ing re­claimed waste to build sports parks and foot­ball theme parks.

The township's con­tin­u­ous ef­forts have been well- recog­nised. In June 2018, its case study of

“the Di­ver­si­fi­ca­tion of En­ter­prise Prod­ucts” was se­lected as an ex­cel­lent model for con­struc­tion waste dis­posal and re­source re­cy­cling by the Bei­jing Mu­nic­i­pal Com­mis­sion of De­vel­op­ment and Re­form and the Bei­jing Mu­nic­i­pal Com­mis­sion of Hous­ing and Ur­ban- Ru­ral De­vel­op­ment.

Ying­hai Township con­tin­ues to be an in­no­va­tor in “turn­ing waste into trea­sure.” In ad­di­tion to hir­ing a pro­fes­sional com­pany to sci­en­tif­i­cally dis­pose of and utilise con­struc­tion waste, Ying­hai Township built a fully en­closed con­struc­tion waste dis­posal plant with a land oc­cu­pa­tion of about six ha and an an­nual ca­pac­ity of over two mil­lion tonnes. The com­pany con­tin­ues to re­search con­struc­tion waste re­cy­cling tech­nol­ogy, im­prov­ing the util­i­sa­tion rate of con­struc­tion waste and low­er­ing its im­pact on the en­vi­ron­ment. Meet­ing the mar­ket de­mand, it makes con­struc­tion waste into re­cy­cled prod­ucts, such as those used in the lo­cal park, in­clud­ing re­cy­cled ag­gre­gate, per­me­able bricks, noise-re­duc­ing bricks and slope pro­tec­tion bricks. The prod­ucts come with third-party test doc­u­ments which sat­isfy cus­tomers' qual­ity con­cerns and en­hance the prod­ucts' com­pet­i­tive­ness.

Since 2017, Ying­hai Township has dis­posed of 1.6 mil­lion tonnes of con­struc­tion waste, with a re­cy­cling util­i­sa­tion rate of over 96 per­cent. The re­cy­cled ag­gre­gate and other prod­ucts have been used in var­i­ous projects, in­clud­ing the roads in the 600-ha of the Binhe For­est Park in Bei­jing Eco­nomic-tech­no­log­i­cal De­vel­op­ment Area, green­ing of Nan­haizi Park and Ying­hai Township, Bei­jing-taipei ex­press­way, and the ring roads of Bei­jing.

Ying­hai Township can serve as a model for de­vel­op­ment and di­ver­si­fi­ca­tion of en­ter­prise prod­ucts. Re­lated en­ter­prises of the township have de­voted great ef­fort to the re­search and de­vel­op­ment of new prod­ucts, pro­duced in­creas­ingly diver­si­fied prod­ucts based on re­cy­cled ag­gre­gate, and ex­tended their in­dus­trial chain. They have also kept a close eye on mar­ket de­mand. Through ex­tended de­vel­op­ment of re­cy­cled ag­gre­gate and to en­sure prod­ucts' qual­ity, they have been seek­ing new ways to com­pre­hen­sively utilise con­struc­tion waste and en­hance its util­i­sa­tion rate.

Ying­hai Township can also be a model for its con­tin­u­ous ex­pan­sion of green space. It is ex­pected that by June 2019, the to­tal green­ing area of Ying­hai Township will reach 360 ha, among which 280 ha will have been re­claimed from de­mo­li­tion and re­lo­ca­tion. Ying­hai Township has ex­panded green space, op­ti­mised the lay­out of pub­lic green space, cre­ated an eco­log­i­cally liv­able en­vi­ron­ment, and built “clear wa­ters and lush moun­tains” with prac­ti­cal mea­sures. The sound eco­log­i­cal en­vi­ron­ment has grad­u­ally be­come the cor­ner­stone for im­prov­ing res­i­dents' qual­ity of life and a win­dow to dis­play the pos­i­tive image of Ying­hai Township. Peo­ple here can en­joy a vig­or­ous, healthy and happy life with en­riched cul­tural ac­tiv­i­ties.

The suc­cess of Ying­hai Ji­ayuan and the Ying­hai Leisure Park ex­em­plify the Dax­ing Dis­trict's de­vel­op­ment aims. In re­cent years, Dax­ing Dis­trict has fo­cused on the func­tional ori­en­ta­tion of build­ing it­self into a demon­stra­tion zone for co­or­di­nated de­vel­op­ment of Bei­jingTian­jin- He­bei, a zone led by sci­en­tific and tech­no­log­i­cal in­no­va­tion, a pi­o­neer zone for deep­en­ing re­form of ur­ban- ru­ral de­vel­op­ment, and a new gate­way for in­ter­na­tional ex­changes in the south­ern cap­i­tal. It has be­come a good model for vil­lage se­cu­rity gov­er­nance, a pi­lot of ru­ral col­lec­tive land con­struc­tion, in­te­grated de­vel­op­ment of in­dus­try and city, in­te­grated de­vel­op­ment of ur­ban and ru­ral ar­eas, and eco­log­i­cal im­prove­ment. It is striv­ing to build a new high­land of de­vel­op­ment in the south of the cap­i­tal. Dax­ing Dis­trict will strictly con­trol and mon­i­tor its plan­ning, strengthen strate­gic re­lo­ca­tion and green­ing, and leave space for the func­tional de­vel­op­ment of the cap­i­tal city in the new era. Dur­ing Bei­jing's over­all trans­for­ma­tion, Dax­ing Dis­trict has made use of the rare op­por­tu­nity and made it­self a greener and more plea­sur­able area.

South Bei­jing fea­tures more and more green spa­ces.

Res­i­dents en­joy the en­vi­ron­ment in Ying­hai Township.

A res­i­dent en­joys leisure time in a park.

Deer sculp­tures that were made from con­struc­tion waste.

A trail paved with per­me­able bricks made from re­cy­cled ma­te­ri­als

Ying­hai Leisure Park

Newspapers in English

Newspapers from China

© PressReader. All rights reserved.