River brought back to life af­ter clean-up

Fish­er­men re­turn to pre­vi­ously dead stretch of Thò Vaûi River

Viet Nam News - - City Life -

— The wa­ter qual­ity in the ThòVaûiRiver in ÑoàngNai Province near HCM City has im­proved, al­low­ing fish­er­men to now catch and farm fish and other species in it.

The river, which flows down­stream of the Ñoàng Nai River, was con­sid­ered dead just six years ago be­cause of pol­lu­tion caused by un­treated wastew­a­ter dis­charged by fac­to­ries.

Traàn Vaên Tieän, a fish­er­man in Long Thaønh District’s Phöôùc Thaùi Com­mune, said the wa­ter used to be black be­cause of the waste, which also caused the death of fish, shrimp, and other species.

Af­ter Tai­wanese com­pany Vedan was found in 2008 to have been di­rectly dis­charg­ing un­treated waste into the Thò Vaûi for years, lo­cal au­thor­i­ties im­proved man­age­ment of wastew­a­ter and the river has im­proved as a re­sult, he said.

“Fish­er­men can now catch more fish.”

Phöôùc Thaùi Com­mune now has 300 house­holds that fish in the river and raise fish and other creatures with wa­ter from the river, ac­cord­ing to the com­mune Famers As­so­ci­a­tion.

Thou­sands of house­holds that had ceased farm­ing of shrimp and other aquatic species along the Thò Vaûi in Ñoàng Nai and Baø Ròa – Vuõng Taøu prov­inces and HCM City have now re­sumed.

In re­cent years Ñoàng Nai au­thor­i­ties have taken many mea­sures to im­prove treat­ment of wastew­a­ter at in­dus­trial parks and res­i­den­tial ar­eas be­fore it is re­leased into the river.

Tests in 2013 and ear­lier this year showed that the river’s wa­ter qual­ity is good enough for aquatic species to live in it.

But, ad­mit­tedly, it is yet to meet cer­tain cri­te­ria.

Nguyeãn Ngoïc Thöôøng, deputy direc­tor of the Ñoàng Nai Province De­part­ment of Nat­u­ral Re­sources and En­vi­ron­ment, said that oc­ca­sion­ally bi­o­log­i­cal oxy­gen de­mand (BOD) and chem­i­cal oxy­gen de­mand (COD) ex­ceed per­mit­ted lev­els, but not of­ten.

Many in­dus­trial parks are also lo­cated along the Ñoàng Nai River.

Waste from Bieân Hoaø 1 In­dus­trial Park, the coun­try’s first, in Bieân Hoaø city is a ma­jor source of pol­lu­tion since most com­pa­nies in the park lack wastew­a­ter treat­ment fa­cil­i­ties.

Ñoàng Nai au­thor­i­ties plan to con­vert the 330ha park into a mod­ern ur­ban –com­mer­cial - ser­vices zone by 2020, and the fac­to­ries are set to move out of there.

They have thrown the book at com­pa­nies vi­o­lat­ing en­vi­ron­men­tal reg­u­la­tions and are set­ting up large waste wa­ter treat­ment plants in in­dus­trial parks.

They have also set up many au­to­matic ob­ser­va­tion sta­tions on the Ñoàng Nai and Thò Vaûi in­clud­ing at 18 in­dus­trial parks that have large, ef­fi­cient waste treat­ment plants and 19 firms lo­cated else­where that gen­er­ate large quan­ti­ties of wastew­a­ter.

Thöôøng said the province would soon set up six more such sta­tions on the two rivers.

In the province, around 500,000cu.m of wastew­a­ter is pro­duced ev­ery day by in­dus­tries and homes, ac­cord­ing to the De­part­ment of Nat­u­ral Re­sources and En­vi­ron­ment. —

— VNA/ VNS Photo Syõ Tuyeân

The Thò Vaûi River in south­ern Ñoàng Nai Province. The qual­ity of the wa­ter in the pre­vi­ously pol­luted river has sig­nif­i­cantly re­cov­ered fol­low­ing six years of ef­forts to im­prove waste man­age­ment.

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