工業(yè)廢水在城市污水中的比重,因城市工業(yè)生產(chǎn)規(guī)模和水平而不同,可從百分之幾到百分之幾十.其中往往含有腐蝕性、有毒、有害、難以生物降解的污染物.因此,工業(yè)廢水必須進(jìn)行處理,達(dá)到一定標(biāo)準(zhǔn)后方能排入生活污水系統(tǒng).生活污水和工業(yè)廢水的水量以及兩者的比例決定著城市污水處理的方法、技術(shù)和處理程度.

一 工程概況

某啤酒公司以大麥和大米為主要原料，輔以啤酒花和鮮酵母制造啤酒，年產(chǎn)啤酒10萬噸。廢水處理工程的設(shè)計(jì)規(guī)模為3500m3/d，合146m3/h。

二  處理工藝

1 生產(chǎn)工藝及水質(zhì)

廢水主要來源有：糖化車間的糖化、過濾洗滌水；發(fā)酵過程的發(fā)酵罐洗滌、過濾洗滌水；灌裝過程洗瓶、滅菌及破瓶啤酒；冷卻水和成品車間洗滌水等。

設(shè)計(jì)進(jìn)水水質(zhì)為：COD＝2500mg/L, BOD＝1800mg/L, SS＝400mg/L。

由于處理后的出水量最終排放的去向是城市污水管道，因此執(zhí)行《污水綜合排放標(biāo)準(zhǔn)》（GB8978-1996）中的一級（新擴(kuò)改）標(biāo)準(zhǔn)，即：COD＜100mg/L, BOD＜20mg/L, SS＜20mg/L。

2  處理工藝

本工程廢水中屬高濃度有機(jī)廢水，可生化性好，適合采用生化處理。通過工藝的選擇比較設(shè)計(jì)中采用了厭氧UASB和好氧SBR的組合工藝。

針對廢水懸浮物較多的特點(diǎn)，采用格柵和固液分離機(jī)兩級預(yù)處理進(jìn)行去除，避免對后續(xù)UASB的影響。

3 工藝流程

本工程工藝流程

廢水先經(jīng)細(xì)格柵去除雜物后，經(jīng)固液分離機(jī)去除麥麩等大顆粒懸浮物，后進(jìn)入集水井，由潛污泵提升進(jìn)入調(diào)節(jié)池，調(diào)節(jié)水量水質(zhì)后經(jīng)過二次提升進(jìn)入U(xiǎn)ASB反應(yīng)器。UASB反應(yīng)器處理后的出水進(jìn)入好氧SBR曝氣池，處理后達(dá)標(biāo)排放。設(shè)計(jì)中UASB前設(shè)有酸堿調(diào)節(jié)設(shè)施。曝氣池產(chǎn)生的剩余污泥重力排入調(diào)節(jié)池，有調(diào)節(jié)池提升進(jìn)入?yún)捬醭?。從厭氧UASB池排出的剩余污泥進(jìn)入污泥濃縮池，經(jīng)濃縮后由帶式污泥脫水機(jī)進(jìn)行脫水處理。濃縮池的上清液和脫水機(jī)房清液流回集水井。脫水后的污泥外運(yùn)填埋或經(jīng)堆肥等處理后制成生物有機(jī)肥。

4 主要設(shè)計(jì)參數(shù)

（1）       進(jìn)水格柵和固液分離機(jī)  設(shè)一道細(xì)格柵，柵條間隙5mm。固液分離機(jī)采用轉(zhuǎn)筒式，帶自動(dòng)沖洗裝置。分離出固體廢棄物可以同生活垃圾一同處理。

（2）       集水井和調(diào)節(jié)池  集水井設(shè)有2臺潛污泵提升廢水進(jìn)入調(diào)節(jié)池。調(diào)節(jié)池內(nèi)設(shè)有提升泵組，將廢水提升進(jìn)入U(xiǎn)ASB反應(yīng)器。調(diào)節(jié)池HRT=8h，有效容積1170m3，結(jié)構(gòu)尺寸22.0m×12.0m×5.0m。

（3）       UASB反應(yīng)器  有機(jī)負(fù)荷5.5kgCOD/(m3·d),有效容積1580m3，數(shù)量2座，單池尺寸?13.75m×5.65m，有效水深5.3m。設(shè)計(jì)去除效率COD85%、BOD85%、SS50%。

（4）       SBR反應(yīng)器  污泥負(fù)荷0.25kgCOD/(kgMLSS·d)，有效容積1735m3，數(shù)量2座，單池尺寸?18.33m×4.65m，有效水深4.2m。選用膜片式微孔曝氣管300根，單管長2.2m。

（5）       鼓風(fēng)機(jī)  SBR曝氣的氣水比10:1.風(fēng)機(jī)選用SSR150型3臺，2用1備。單臺流量13.50m3/min，功率18.5Kw。

（6）       污泥處理系統(tǒng)  污泥處理系統(tǒng)包括濃縮池、污泥脫水機(jī)和加藥系統(tǒng)等。濕污泥產(chǎn)量140m3/d。污泥濃縮池停留時(shí)間18h，有效容積105m3，結(jié)構(gòu)尺寸：?6.0m×6.88m,有效水深6.38m。脫水機(jī)房選用帶式壓濾脫水機(jī)1臺，帶寬1m.

三技術(shù)經(jīng)濟(jì)指標(biāo)

本項(xiàng)目總體投資600萬元。運(yùn)行電耗0.33（Kw·h）/m3廢水，直接運(yùn)行費(fèi)用為0.35元/m3廢水。

濟(jì)寧天通設(shè)備公司是國內(nèi)領(lǐng)先的水處理設(shè)備研發(fā)、生產(chǎn)制造銷售與一體的生產(chǎn)廠家，其核心產(chǎn)品以：污水處理設(shè)備、廢水處理設(shè)備、工業(yè)廢水設(shè)備、生活污水處理設(shè)備、食品廠污水處理設(shè)備、屠宰場廠廢水處理設(shè)備、醫(yī)院廢水處理、制藥廠廢水設(shè)備等水處理設(shè)備為主；

濟(jì)寧 天通，始終堅(jiān)持以“先做人，后做事”為核心價(jià)值觀，以“儒商文化”為品牌文化，以“做今日品牌，創(chuàng)百年企業(yè)”為宗旨，以“實(shí)用為本、德行天下”為理念，鑄造中國機(jī)械行業(yè)的百年品牌。公司依托與國外的分支機(jī)構(gòu)、國內(nèi)的辦事處、及專業(yè)的施工隊(duì)伍，憑借行業(yè)內(nèi)設(shè)備研發(fā)專家團(tuán)隊(duì)的強(qiáng)大創(chuàng)新能力、扎實(shí)的設(shè)備品質(zhì)、完善的售后服務(wù)體系，贏得了全球客戶的信任與合作。

In the proportion of urban sewage, industrial wastewater for the city's industrial production scale and level, but from a few percent to percentage decades. Which often contain corrosive, poisonous, harmful, are difficult to biodegradable pollutants. Therefore, industrial waste water must be treated, reach a certain standard rear can into the sewage system. Life sewage and industrial waste water amount and proportion of the two determines the urban sewage treatment methods, technology and level.

Project overview

A beer company, with barley and rice as its main raw materials, is supplemented with beer and fresh yeast, and produces a beer of 100,000 tons a year. The design scale of wastewater treatment works is 3500m cubed/d, which is 146m cubed/h.

Two-process process

1 production process and water quality

The main sources of waste water are the saccharification and filtration washing water in the saccharification workshop; Fermentation tank washing and filtration washing water; Bottling, sterilization and beer bottles; Cooling water and finished workshop washing water, etc.

Design water quality: COD = 2500mg/L, BOD = 1800mg/L, SS = 400mg/L.

Due to the water yield of final discharge after processing the whereabouts of the urban sewage pipeline, so "integrated wastewater discharge standard" (GB8978-1996) in the primary (new expansion change) standard, namely: COD < 100 mg/L, BOD < 20 mg/L, SS < 20 mg/L.

2 treatment process

The wastewater of this project is a high concentration organic wastewater, which can be biochemical and suitable for biochemical treatment. The combination process of anaerobic UASB and good oxygen SBR was adopted in the design of the process.

In order to avoid the influence of the following UASB, the two stage pretreatment of the grille and solid-liquid separation machine was used for the characteristics of waste water suspension.

3 process flow

This engineering process

Wastewater after fine grille to remove impurities, first through the solid liquid separator large particles suspended solids removal of wheat bran, into collecting well and the submersible sewage pump to ascend into adjusting pool, adjusting water quality after secondary to ascend into UASB reactor. After treatment of UASB reactor, the water outlet enters good oxygen SBR aeration tank, and after treatment, it is discharged. In the design, UASB is equipped with acid and alkali adjustment facilities. The residual sludge caused by aeration pool is pumped into the regulating pool, and the adjustment pool is raised to the anaerobic pool. The residual sludge discharged from anaerobic UASB pool enters the sludge thickening pool and is condensed and then dehydrated by the belt sludge dehydrator. The upper cleaning fluid and the dewatering machine room cleaning fluid flow back to the collecting well. Biological organic fertilizer is made after the treatment of the waste water after dehydration or compost.

Main design parameters

(1) a fine grating and 5mm gap between the inlet grille and solid-liquid separator. The solid liquid separator adopts rotary drum and automatic washing device. The separation of solid waste can be treated with living waste.

(2) collecting Wells and regulating pool Wells are equipped with two submersible pumps to lift wastewater into the regulating pool. The adjustment pool is equipped with the lifting pump group to upgrade the waste water into the UASB reactor. Adjustment pool HRT= 8h, effective volume 1170m cubic, structural dimensions 22.0m * 12.0m * 5.0 m.

(3) the organic load of 5.5 kgCOD/UASB reactor (m after · d), 1580 m after effective volume, number two, ? ChanChi size 13.75 m * 5.65 m, the effective depth of 5.3 m. Design removal efficiency COD85 %, BOD85 %, SS50 %.

(4) 0.25 kgCOD/SBR sludge load (kgMLSS · d), 1735 m after effective volume, number two, ? ChanChi size 18.33 m * 4.65 m, the effective depth of 4.2 m. The diaphragm was selected for 300 tubes with a single tube of 2.2 m.

(5) blower SBR aerated water ratio 10:1. The fan USES SSR150 type 3, 2 with 1. Single flow 13.50m cubed/min, power 18.5 Kw.

(6) sludge treatment system of sludge treatment system includes concentrated tank, sludge dewatering machine and additive system. The production of wet sludge is 140m cubed/d. Sludge concentration pool residence time 18 h, 105 m after effective volume, structure size: 6.0 m * 6.88 m ?, effective depth of 6.38 m. The dewatering machine room USES the belt type pressure filter dewatering machine 1, the bandwidth is 1m.

Technical and economic indicators

The total investment of the project is 6 million yuan. Running the power consumption of 0.33 (Kw · h)/m cubed wastewater, the direct operation cost is 0.35 yuan/m cubed wastewater.

Jining day pass equipment company is a leading domestic water treatment equipment research and development, manufacturing sales and one of the manufacturers, its core product: sewage treatment equipment, wastewater treatment, industrial wastewater treatment equipment, sewage treatment equipment, sewage treatment equipment, slaughterhouse wastewater treatment equipment in food, pharmaceutical wastewater, hospital wastewater treatment equipment, water treatment equipment is given priority to;

Jining day pass, always adhere to the "oneself first, after doing things" as the core values and brand culture of "intellectual businessman culture", to "do today's brand, set up one hundred enterprise" for the purpose, to "practical, virtue" for the idea, brand casting machinery industry in China in one hundred. Companies rely on with foreign branches, domestic offices, and professional construction team, with industry equipment research and development team of experts strong innovation ability, solid equipment quality and perfect after-sales service system, won the trust and cooperation of global customers.