Ningxia Aoba nyuj ua liaj ua teb Wastewater Treatment Case
I. Project Overview
Qhov project no yog qhov project kho dej khib nyiab rau Ningxia Aoba nyuj ua liaj ua teb. Lub chaw ua liaj ua teb nyob hauv Wulintuo Cattle Farming Park hauv Lintong District, Wuwei City, Ningxia. Nws feem ntau koom nrog kev yug nyuj, nrog 3,000 tus nyuj tam sim no raug ntes, thiab kev tso tawm txhua hnub ntawm cov tsiaj txhu pov tseg yog 700 cubic meters. Cov dej khib nyiab yog los ntawm kev tso cov nyuj los ntawm cov nyuj, ntxuav cov chav ua mis nyuj, thiab cov kua sib xyaw ntawm cov quav. Cov chaw kho mob uas twb muaj lawm tsis tuaj yeem ua tau raws li kev tiv thaiv ib puag ncig. Yog li ntawd, nws tau tso siab rau Jinan Guangbo Environmental Protection los muab cov phiaj xwm kho kom yooj yim. Cov kua dej yuav tsum tau ua kom tau raws li "Pollutant Discharge Standards for Livestock and Poultry Industry" (GB 18596-2001), suav nrog kev siv cov peev txheej thiab cov nqi qis, thiab ua tau raws li cov cai hauv zos rau kev tswj hwm ib puag ncig ntawm kev ua liaj ua teb nyuj.
II. Cov yam ntxwv ntawm cov dej khib nyiab thiab kev kho mob nyuaj
Cov ntsiab lus tseem ceeb ntawm cov dej khib nyiab los ntawm kev ua liaj ua teb no: COD 5,000-8,000 mg/L, ammonia nitrogen 500-800 mg/L, SS 2,500-4,000 mg/L. Nws muaj ib tug loj npaum li cas ntawm nyuj manure residue, nyom fiber, thiab mis nyuj rog. Nws muaj cov yam ntxwv ntawm COD siab, siab ammonia nitrogen, ntau cov khib nyiab tshem tawm, cov ntsiab lus lipid siab, thiab cov dej tsis zoo. Qhov kev sib tw tseem ceeb yog qhov impurities yog qhov ua rau cov khoom siv clog, thiab cov roj inhibits biochemical. Nws yog ib qho tsim nyog yuav tsum tau hloov mus rau qhov kev sib tw ntawm kev ua liaj ua teb thiab ua tiav kev ua raws li sai thiab kev ua haujlwm qis.
III. Txoj Kev Kho Mob Core
Jinan Guangbo Environmental Protection tau kho cov txheej txheem yooj yim: cov tsiaj txhu khib nyiab → tshuab grille → roj separator → solid- kua separator → regulating tank → UASB anaerobic reactor → MBBR aerobic biochemical tank → tua kab mob thiab tawm. Kev cia siab rau tus kheej -tsim UASB reactor kom ua tau zoo degrade siab -concentration organic teeb meem, ntxiv cov roj cais kom tshem tawm cov roj, thiab ua ke nrog cov khoom sib cais- kua sib cais los daws cov teeb meem ntawm impurity clogging. Cov txheej txheem yog modularized thiab yooj yim rau kev khiav lag luam thiab tswj, yoog raws li kev xav tau ntawm cov nyuj ua liaj ua teb.
IV. Qhov project Achievements
Tom qab qhov project tau muab tso rau hauv kev siv, cov dej ntws tau ruaj khov thiab ua tau raws li cov qauv. Kev tshem tawm tus nqi ntawm COD thiab ammonia nitrogen tshaj 97%, thiab cov nqi tshem tawm cov khib nyiab thiab roj mus txog 98%. Cov biogas tau rov qab los rau cua sov hauv kev ua liaj ua teb, thiab biogas residue thiab kua tau siv los ua chiv. Kev txuag nyiaj txhua xyoo hauv kev siv hluav taws xob thiab cov khoom siv pov tseg yog 900,000 yuan, daws cov teeb meem ib puag ncig ntawm kev ua liaj ua teb thiab ua tiav kev sib koom tes ntawm kev ua liaj ua teb nyuj thiab kev tiv thaiv ib puag ncig.
