平流式沉淀池計(jì)算

1、平流式沉淀池計(jì)算1、設(shè)計(jì)進(jìn)水水質(zhì) 參數(shù)設(shè)計(jì)流量(Q) 5000 m3/d設(shè)計(jì)水溫(T) 25 ? COD (CO) 500 mg/L SS (SO) 400 mg/L BOD(BO)300 mg/L NH3N(N0) 25 mg/L TN(TNO) 40 mg/L TP (TPO) 15 mg/L2、設(shè)計(jì)去除率%COD 20 % SS(SO) 40 % BOD (B0) 15 % NH3-N 0 % TN(TNO) 5 % TP (TPO) 7.5 % 3、設(shè)計(jì)出水水質(zhì)參數(shù)COD(Ce) 400 mg/L SS(Se) 240 mg/L BOD(Be) 255 mg/L NH3N(Ne) 25

2、 mg/L TN(TNe) 38mg/L TP (TPe) 13. 875 mg/L 4、沉淀池相關(guān)參數(shù)及一些基本要求對(duì)于城市污水，初沉池表面負(fù)荷一般取值1.2-2. 0之間，堰口負(fù)荷?2. 91/(s. m)表面負(fù)荷(q) 1.2 m3/(m2. h)二次沉淀池，活性污泥法后，表面負(fù)荷一般取值0. 6-1. 0之間，堰口負(fù)荷？1.71/(s. m)沉淀時(shí)間(t) 1.5 h生物膜法后，表面負(fù)荷一般取值1. o-l. 5之間，堰口負(fù)荷？1.71/(s. m)水平流速(v) 5 mm/sHighway 1/2. Rail transportation and land use there Big

3、. Urban rail transit asa low-pollution urban public transport has become a major positive development andconstruction of the citys main transport infrastructure through the construction ofurban rail transit will help curb rapid growth in traffic demand and help reduce thecore frequency4.1、靜壓排泥管的直徑不應(yīng)

4、小于200mm4. 2、初次沉淀池的靜壓排泥水頭不應(yīng)小于1. 5m;二次沉淀池的靜壓水頭:生物膜法不應(yīng)小于1.2m,活性污泥法不應(yīng)小于0. 9mO4.3、平流沉淀池 的長(zhǎng)寬比不小于4,一般取值4-54.4、平流沉淀池的長(zhǎng)深比不小于8,一般取值8-124.3、池底縱坡：采用機(jī)械刮泥時(shí)，不小于0. 005,一般取值0. 01-0. 024.6、最大水平流 速:初次沉淀池7mm/s,二次沉淀池5mm/s4.7、進(jìn)出口處應(yīng) 設(shè)置擋板，高岀池內(nèi)水面0. 1-0 15mo擋板淹沒深度:進(jìn)口處不應(yīng)小于0. 25m,一般為0. 51. 0m;出口處一般為0. 30. 4m=擋板位置：距進(jìn)水口0. 51. 0m

5、,距出水口Highway 1/2 Rail transportation and land use there Big Urban rail transitas a low-pollution urban public transport has become a major positive development andconstruction of the citys main transport infrastructure through the construction ofurban rail transit will help curb rapid growth in traf

6、fic demand and help reduce thecore frequency0. 25-0. 5m3、沉淀池設(shè)計(jì)計(jì)27 m計(jì)算堰長(zhǎng)L 19. 95530013 20 m長(zhǎng)(L?)6. 430041152 m復(fù)核長(zhǎng)寬4. 5寬度(B)比:四舍五入得6 m復(fù)核長(zhǎng)深15比:5.6、設(shè)池子個(gè)2個(gè)(格)(格)數(shù)(n)則每個(gè)3 m(格)的寬度5.7、污泥部分所 需的總?cè)莘e(V)兩次清除0. 5 d污泥間隔5. 1、池子的表面173. 6111111 m2積(A)5.2.沉淀部分有1.8 m效水深(h2)5.3.沉淀部分有312.5 m3效容積(V?)5.4.沉淀池的池5.5.沉淀池的總時(shí)間(T

7、)污泥密度1 t/m3(Y)污泥含水98 %率(P0)V=Q*(SO-Se) 20 m3 *10(6)*100*T/(Y (100-P0)=5.8、池體總高度2. 72 m (H)沉淀池超0. 3 m高(hl)緩沖層高0. 5 m般取值度(h3) 0. 3-0. 5Highway 1/2. Rail transportation and land use there Big. Urban rail transitas a low-pollution urban public transport has become a major positive development andconstru

8、ction of the city，s main transport infrastructure through the construction ofurban rail transit will help curb rapid growth in traffic demand and help reduce thecore frequency污泥區(qū)高0. 12 m度(h4)5.9、污泥斗容積(VI)設(shè)污泥斗0. 75 m高度(h4)7. 875四舍五入得8 m3Highway 1/2 Rail transportation and land use there Big Urban rail transitas a low-pollution urban public transport has become a major positive development andconstruction of the citys main transport infrast