10 Module 7 - Rapid Sand Filters

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10 Module 7 - Rapid Sand Filters
3850-PM-BCW0400j
Module 7
7/2016
Applicant Name:
COMMONWEALTH OF PENNSYLVANIA
DEPARTMENT OF ENVIRONMENTAL PROTECTION
BUREAU OF CLEAN WATER
RAPID SAND FILTERS
MODULE 7
APPLICANT NAME
UNIT
DESIGN DATA
1. TYPE OF PROCESS
(Check Appropriate Boxes)
UNIT
Existing
Existing
Existing
Proposed
Proposed
Proposed
Proposed
GRAVITY
UP FLOW
DOWN FLOW
(sq ft)
3. GRADED GRAVEL DEPTH
(in.)
4.
a.
Type Of Media
b.
Depth
(in.)
c.
Effective Size
(mm)
d.
Uniformity Coefficient
5. HYDRAULIC LOADING (gpm/sq ft)
BASED ON PEAK FLOW RATE OR MAXIMUM
PUMP RATE, WHICHEVER CONTROLS
6.
UNIT
Existing
PRESSURE
2. FILTER AREA
UNIT
Describe backwash procedure, length, rates and how backwash return is equalized.

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