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                      Treating high ammonia hebei meihua MSG Projects

                       

                        Introduction
                      Hebei Meihua Monosodium Glutamate Group is the largest manufacturer of MSG in China, monosodium glutamate-based products, by-products such as starch, glutamate, a bacterial protein and fertilizer.
                      Circular economy and sustainable development as company strategic principles, production scale has grown increasingly and there is large demand for water, it is more stringent for groundwater resources shortage and the state environmental requirements, so the depth wastewater treatment and reuse requirements meet the the needs of business development and national policies and regulations, wastewater treatment can achieve zero emissions and emission reduction as well as the purpose of saving water.
                      Meihua Group in Hebei and Inner Mongolia have three companies, the total monosodium glutamate output is 120,000T, the total wastewater volume is 17,000 T/D by 2006.Double membrane method for treatment of wastewater is by motimo from 2006.
                        P1000301

                       Scope of Work
                      MOTIMO has undertaken and completed project design, equipment installation, commissioning.

                       General Information
                      MOTIMO undertook the first phase construction of Hebei Meihua MSG 2000 T/D wastewater treatment in 2006. The project was put into operation in November 2007 ,passed the inspection and has been operated stably so far.Due to the desired effect of MBR in the removal of COD, NH4-N, in order to meet user’s request, the traditional process equipment of the original 2000 T/D was transformed in August 2009, the scale is 2000 T/D, the system runs stably after using MBR process, the total current scale is 4000 T/D, the NH4-N, COD removal efficiency is significant.

                       Membrane Module Info
                      The project uses MOTIMO’s FP-A215 curtain membrane module (material is PVDF, the effective membrane area is 20m2,pore size is 0.2μm), designed operation flux is 10LM2H (instantaneous flux is 12.5LM2H), water quality is better than the industrial emission standards (see Table 2).

                      DSC_7204 ????.jpg  2.jpg

                       Process
                      Process: Raw water-----Equalizing basin-----UASB----Anoxic tank-----Aerobic tank----MBR----CMF-----RO---Reuse
                      (Water quality see table 1)

                      Table 1:Hebei Meihua MSG wastewater quality analysis (raw water, MBR effluent)

                      No.

                      Item

                      Unit

                      Raw water quality

                      MBRoutlet water quality

                      1

                      PH

                       

                      7.1~8.2

                      6.5~7.5

                      2

                      Temperature

                      °C

                      25~38

                      25~38

                      3

                      CODcr

                      mg/L

                      300~1600

                      <60

                      4

                      BOD5

                      mg/L

                      200~800

                      <5

                      5

                      Turbidity

                      NTU

                       

                      <1

                      6

                      SS

                      mg/L

                      200~300

                      <5

                      7

                      NH4-N

                      mg/L

                      240~550

                      <5

                      9

                      Conductivity (average)

                      ms/cm

                      3600

                      2900

                      10

                      Dissolved solids

                      mg/L

                      1800

                      1700

                      11

                      Alkalinity

                      mg/L

                      1200~2500

                      <100

                      12

                      TOC

                      mg/L

                       

                      <30

                      13

                      Total hard

                      mg/L

                      550

                      530

                      14

                      color

                       

                       

                      <30

                      15

                      SO42-

                      mg/L

                      100~150

                      100~150

                      Table 2:Hebei Meihua MSG MBR system main operating parameters

                      No.

                      Item

                      Content

                      1

                      Operation flow (12~25°C, 0.1MPa)

                      Max :13LM2H
                      Average :10LM2H

                      2

                      Maximum TMP

                      50KPa

                      3

                      Temperature range

                      20~37°C

                      4

                      Operation method

                      Open 8min stop 2min

                      5

                      MLSS

                      6000~8000mg/L

                      6

                      Reflux ratio

                      300%

                      7

                      DO

                      Anoxic tankDO<0.5mg/L,
                      Membrane tank DO 1.5~2.5mg/L

                      8

                      Backwash frequence

                      Once per day

                      9

                      Backwash consumption

                      Twice of water production

                      10

                      Online chemical cleaning period

                      Once a day

                      11

                      Online chemical cleaningpharmacy

                      NaClO

                      12

                      concentration of on-line chemical cleaning pharmacy

                      300mg/L

                      13

                      Offline immersion cleaning period

                      6 months once

                      14

                      immersion cleaning pharmacy
                      Once with 1 pharmacy, 2 cleaning pharmacy is interchangeable

                      NaClO2000mg/L
                      HCl4000mg/L

                      15

                      Offline cleaning pharmacy immersion time

                      5~10hr

                       Conculution
                      The implementation of the project on the one hand can achieve the utilization of water resource, thus the sewage discharge can be greatly reduced, the significant improvements in the conflicts with the surrounding environment can be brought, on the other hand , the NH4-N ,COD and other pollution loads to local water were significantly reduced. We can know from the practical application of the project that MOTIMO’s MBR system has advanced and reliable technology, plays an important role in making wasterwater become resource and shows superior performance especially for high strength ammonia wastewater treatment.
                      Since the delivery, the project has operated stably, safely and economically.

                       

                       

                      甘肃11选5五码遗漏

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