一種適合我國中小城鎮(zhèn)污水處理技術(shù)

     由上表可以看出，污水處理廠進水水質(zhì)變化很大，主要是因為本區(qū)工業(yè)企業(yè)比較多，工業(yè)廢水所占比重較大，可生化性差。造成進水水質(zhì)有時高于原設(shè)計指標(biāo)。但是污水處理廠出水水質(zhì)比較穩(wěn)定達標(biāo)排放，CODcr去除率可達到85%以上，BOD5去除率可達到92%以上。

7  結(jié)語

（1）改進型UASB水解+復(fù)合生物接觸氧化工藝是針對我國中小城鎮(zhèn)污水水質(zhì)水量特點開發(fā)的一種新工藝，對水質(zhì)、水量有很強的抗沖擊負荷能力強；對難降解工業(yè)廢水有較強的處理能力。

（2）該工藝既能去除污水中的難降解COD、BOD5、SS、TN、NH3－N、TP，而且能實現(xiàn)污水、污泥的一次性處理，并且使污泥減量化。

（3）該工藝流程簡單、自動化程度要求低，抗沖擊負荷能力強，設(shè)備國產(chǎn)化程度高，具有較強的適應(yīng)性。

（4）該污水處理廠噸水造價700元左右，噸水直接運行費用為0.28～0.32元；該工藝基建投資和運行費用低，適合在我國中小城鎮(zhèn)推廣應(yīng)用。

參考文獻

[1]  何圣兵，王寶貞. 厭氧—好氧生物膜處理污水污泥的研究[J].2002（9）：39-41.

[2]  王凱軍.城市污水生物處理新技術(shù)開發(fā)與應(yīng)用[M]. 化學(xué)工業(yè)出版社,北京.2001,10.

One Fit Technique for Middle and Little Scale Municipal Wastewater Treatment In China

——The Project Introduction of Tianjin Jinnan District Huanxing WastewaterTreatment Plant

WANG Wen1, WANG Fang-shun2,CHEN Lu1,CHEN FAN-zhen1,GU JIAN-guo1

(1. Tianjin Huanke Water Development Co., LTD., Tianjin 300191;  2. Zibo Boshan District Environment Protective Bureau, Zibo 255200)

Abstract: In this paper, Tianjin Jinnan District Huanxing wastewater treatment plant is used as an example, we introduce one technique that fits middle and little scale municipal wastewater treatment in China. We discuss technique flow, design feature of the main tanks, and main equipments. Design scale of Huanxing wastewater treatment plant is 30 thousand tons per day. The main qualities of input water of the plant is CODCr: 450mg/l, BOD5: 200mg/l, and the output water qualities precede the second-degree standard of Discharge standard of pollutants for municipal wastewater treatment plant. So far, Huanxing wastewater treatment plant has been operated steadily for 6 months.

Key words: wastewater treatment plant；technique flow；  improved UASB hydrolysable tank   compound bio-contact oxidation tank； sludge reduction